Wrench



A. YOUNG.

WRENCH.

APPMcATloN FILEDA JuLY 5,1921.

Patented Janv. 17, 1922.

yea/Jal@ C. I INVENTOR AUORNEY wlTN Ess:

UNITI-:o STATES ALFRED YOUNG, OF JAMESTOWN, NEW YORK.

WRENCH.

Specification of Letters Patent. Patented Jan, 17, 1922.

Application filed July 5, 1921. Serial No. 482,577.

70 al? wlou t may concern Be it known that I, ALFRED YOUNG, a citizen of Sweden, residing at Jamestown, in the county of Chautauqua and State of New York, have invented new and useful improvements in Vrenches, of which the following is a specification.

My present invention has reference to a quick acting wrench.

My object is to produce a wrench having both its stationary and movable jaws formed to provide two pairs of opposed gripping surfaces, the shank of the stationary jaw being toothed, and the carriage ot' the movable aw being provided with a spring influenced pivotally supported worm for engaging the teeth, a headed element being associated with the pivotal support or the worm whereby pressure applied thereon will swing the worm out of engagement with the teeth of the shank, and thus permit the quick adjustment of the movable jaw with respect to the stationary aw.

rl`he foregoing, and other objects which will appear as the nature of the invention is better understood, may be accomplished by a construct-ion, combination and operative association of parts, such as is disclosed by the drawings which accompany and which form part of this specification.

In the drawings Figure 1 is a side elevation of a wrench constructed in accordance with this invention, the movable jaw being in section.

Figure 2 is a sectional view on the line 2-2 of Figure 1.

Figure 3 is a sectional view on the line 3 3 ol' Figure 2.

Referring now to the drawings in detail, the numeral 1 designates the head of the stationary jaw. From the head 1 there extends the right. angularly disposed shank 2 provided, on one of its edges with spaced alternating depressions and shoulders orming teeth 3. The end 1 has been referred to as a head because the same projects laterally from the edges ot the shank, providing the same with two engaging surfaces, 4 and 5 respectively, the object engaging surfaces, et' course, comprising the aws. The jaw 5 has itsl engaging face arranged at a slight angle and is toothed.

Secured by plates 6 to the outer end of the shank 2 is the operating handle 7. On the shank lis a slidable carriage 8, The carriage a head 19.

has one end widened to provide a head, the bore of the carriage being disposed cen` trally of the head, and thus the head provides two aws 9 and 10 respectively, the jaw 9 being arranged opposite the jaw 1, the jaw 10 opposite the jaw 5, and the said jaw l0 being disposed at a slight inclination and toothed. The carriage 8, opposite the jaw 10 is thickened, and is provided with a substantially rectangular pocket 11 that enters from the rear end of the carriage. The carriage, at its said rear end and in a line with the pocket l1 is cut away to provide parallel side walls l2. Between these walls there is a worm 13 that is designed to engage with the teeth of the shank 2. The worm is mounted by a removable element 14 on a block 15 that is pivoted, as at 16 in the pocket 11. The end of the block which receives the pivot therethrough is widened, or the block may be provided with a reduced portion or finger 16 that has a threaded opening therethrough. The carriage has a somewhat elongated opening 17 disposed opposite the threaded opening in the finger, and passing through this opening is a stud 18 that has a reduced threaded end which is received in the threaded opening in the finger, the upper end of the stud being provided with The numeral 2O indicates a spring which has one of its ends secured in the pocket and its other end contacting the dog to swing the latter in a direction to cause the worm to engage with the teeth of the shank.

The operation of t-he wrench is believed to be obvious. When a quick adjustment is desi-red, pressure is exerted on the headed end of the stud which swings the block to cause the worm to be raised out of the teeth of the shank. This permits the carriage being moved rapidly on the shank of the stationary jaws. When a nice adjustment is required, pressure on the stud is released and the worm is turned on the thread-like teeth of the shank. The means, for holding the worm on its journal is in the nature of a removable element. The pivot that holds the block in the pocket has one end headed and the other threaded, the threaded end engaging a threaded opening in one of the side walls of the pocket. The Stud 11 is likewise removably connected with the block, as heretofore described, and it will be thus noted that all of these parts with jaws which are disposed opposite the first mentioned jaws, said carriage having a longltudlnal pocket entering from one end thereof and having side walls outward of the pocket, a worm between the side walls engaging the teeth of the shank, a block pivoted in the pocket having an extension providing a journal for Vthe worm, a removable element on the end of the journal securing the worm thereon, said block having a finger projection, said carriage having an elongated opening 0pposite the projection, a stud threadedly engaging the finger and passing through the opening, and a headed elementen the outer end of the stud.

In testimony whereof, I atlix my signature.

ALFRED YOUNG. 

